Interdental brush



FIG. 1 is a perspective view of an interdental brush, showing our new design;

FIG. 2 is a front view, the rear view is a mirror image thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is an enlarged perspective view of the brush portion thereof;

FIG. 8 is an enlarged front view of the brush portion, the enlarged rear view of the brush portion is a mirror image thereof, and the enlarged top plan view of the brush portion and the enlarged bottom plan view of the brush portion are identical thereto;

FIG. 9 is an enlarged left side view of the brush portion thereof;

FIG. 10 is an enlarged right side view of the brush portion thereof; and,

FIG. 11 is a transverse cross-sectional view of the brush portion thereof.

The broken lines in the drawings illustrate portions of the interdental brush that form no part of the claimed design. 

CLAIM The ornamental design for an interdental brush, as shown and described. 